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    <title>Document</title>
    <script>
        //利用函数翻转任意数组 reverse 翻转
        function reverse(arr){
            var newArr = [];
            for (var i = arr.length -1; i >=0 ;i--){
                newArr[newArr.length] =arr[i];
            }
            return newArr;
        }
        var arr1 = reverse ([1,3,4,6,9]);
        console.log(arr1);
        var arr2 =reverse(['red','pink','blue']);
        console.log(arr2);
    </script>
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